The death toll from flash floods and mudslides along the Nepal-China border has exceeded 1,000 people as rescue operations continue in both countries. Nepal’s National Disaster Risk Reduction and Management Authority reported 987 deaths as of Tuesday morning, while Chinese state media reported at least 16 fatalities in Tibet. Officials say that more than 4,400 people remain unaccounted for across the region following the disaster, which was triggered by a glacial collapse.
The flooding began on Wednesday, August 26, after what was initially reported as a magnitude 4.4 earthquake was later identified by the U.S. Geological Survey (USGS) as a magnitude 5.2 glacial collapse. The resulting torrent of ice, mud, and water surged down the Trishuli River and its tributaries, destroying houses, bridges, and hydropower facilities. Experts from the International Centre for Integrated Mountain Development noted that water levels on the Trishuli River rose by as much as 27 feet in 30 minutes during the event.
In Nepal, rescue teams are focused on districts including Nuwakot and Rasuwa, where around 900 workers are feared trapped inside mud-filled hydropower tunnels. In Tibet, Chinese state broadcaster CCTV reported that the Gyirong Port area was largely destroyed, with a single water tower remaining as the only standing structure. Authorities in Nepal have begun mass burials for unidentified victims as morgues became overwhelmed.
The Trishuli hydropower project has seen its facilities buried in mud, while the Gyirong border crossing—a primary trade and travel corridor between Nepal and China—was devastated. The International Centre for Integrated Mountain Development and climate researchers noted that the Lhende Khola River system has flooded twice in 14 months, highlighting a pattern of instability in Himalayan glaciers.
Recovery and search efforts are expected to continue as narrow paths and secondary landslides hinder the movement of heavy machinery. The U.S. State Department has deployed an adviser to the region and issued a $500,000 grant for humanitarian assistance. As of September 1, 2026, authorities are still working to clear mud that is over 5 feet deep in some areas. The next phase of the response will involve assessing the long-term damage to power and trade infrastructure once the search for survivors concludes.